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Ammonium Chloride → Methyl 4-[(4E)-3-{2-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]ethyl}-5-(2-hydroxyphenyl)pent-4-en-1-yl]benzoate

HRID 1920579
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HRID 1920579 반응식
C([Li])CCC.[Br-].[OH:7][C:8]1[CH:33]=[CH:32][CH:31]=[CH:30][C:9]=1[CH2:10][P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[CH2:34]([O:36][C:37](=[O:59])[CH2:38][C:39]1([CH2:42][CH2:43][CH:44]([CH:57]=O)[CH2:45][CH2:46][C:47]2[CH:56]=[CH:55][C:50]([C:51]([O:53][CH3:54])=[O:52])=[CH:49][CH:48]=2)[CH2:41][CH2:40]1)[CH3:35].[Cl-].[NH4+]>CCCCCC.C1COCC1>[CH2:34]([O:36][C:37](=[O:59])[CH2:38][C:39]1([CH2:42][CH2:43][CH:44](/[CH:57]=[CH:10]/[C:9]2[CH:30]=[CH:31][CH:32]=[CH:33][C:8]=2[OH:7])[CH2:45][CH2:46][C:47]2[CH:56]=[CH:55][C:50]([C:51]([O:53][CH3:54])=[O:52])=[CH:49][CH:48]=2)[CH2:41][CH2:40]1)[CH3:35]
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

7

반응물 4

HCID 25517Ammonium ChlorideHCID 2724142(2-Hydroxybenzyl)triphenylphosphonium bromideHCID 57965765Methyl 4-{5-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]-3-formylpentyl}benzoateHCID 178418339Butyllithium

생성물 1

HCID 57965770Methyl 4-[(4E)-3-{2-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]ethyl}-5-(2-hydroxyphenyl)pent-4-en-1-yl]benzoate

시약·촉매·용매 2

HCID 8028Tetrahydrofuran용매HCID 8058Hexane용매

실험 절차

At 0° C., 0.6 ml (1.5 mmol) of a 2.5 M solution of n-butyllithium in hexane is slowly added to a solution of 359 mg (0.799 mmol) of (2-hydroxybenzyl)triphenylphosphonium bromide in 5 ml of anhydrous THF, and the mixture is stirred for 45 min. At this temperature, 192 mg (0.53 mmol) of methyl 4-{5-[1-(2-ethoxy-2-oxoethyl)cyclopropyl]-3-formylpentyl}benzoate are then added slowly, and the mixture is stirred at 0° C. for 2 hours. After complete conversion, saturated ammonium chloride solution is added to the reaction solution, which is then concentrated to dryness. The residue is taken up in ethyl acetate, washed with water and saturated sodium chloride solution and dried over sodium sulfate. After filtration, the solvent is evaporated to dryness. The crude product obtained is purified by flash chromatography on silica gel (mobile phase: cyclohexane/ethyl acetate 4:1). This gives 178.5 mg (74% of theory) of a colorless oil.

후처리

  1. stirringthe mixture is stirred at 0° C. for 2 hours
  2. concentrationis then concentrated to dryness
  3. washwashed with water and saturated sodium chloride solution
  4. dry with materialdried over sodium sulfate
  5. filtrationAfter filtration
  6. customthe solvent is evaporated to dryness

출처 및 근거

ORD 기록
ord-fbc0edfa9b324e3a85db8cde2ae34538
출처 데이터셋
uspto-grants-2012_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08168821B2

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